Thousands of professional photographers sell millions of images through SmugMug. They aren't SmugMug employees (though SmugMug's employees do love taking pictures). These photographers use SmugMug to share and sell photos online.

The best way to contact your photographer is to use the email address he or she has provided to you. Perhaps there is contact information on your photographer's SmugMug homepage.

Another option may be to leave a comment on a gallery or image, asking that the photographer contact you.